In our continuing efforts to provide high quality products, Autodesk has
released hotfix DL15642552 which addresses an issue where drawing annotations missing after migration to Inventor 2011.

This document contains the latest information regarding the installation and
use of this update. It is strongly recommended that you read this entire
document before you apply the update to your product. For reference, you should
save this document to your hard drive or print a copy.

Installation
Instructions

This hotfix is available in 32bit and 64bit versions (downloaded together as one bundle) and is only applicable to Autodesk Inventor 2011 Service Pack 1 for the Subscription Bonus Pack. If you do not have Service Pack 1 for the Subscription Bonus Pack please download and install prior to installing this Hotfix. Once installed, it will appear as an update under Add/Remove Programs and can be uninstalled from there.

Thank You...

We thank all our customers who identified this issue and reported it to us.
These reports give us the opportunity to improve the product and provide you
with the best solution in mechanical design. We also thank you for your
continued business and for feedback regarding the content of this update
release.